Packages that use debconf for configuration prioritize the questions they might ask you. Only questions with a certain priority or higher are actually shown to you; all less important questions are skipped.

All components of the installer needed to complete the install will be loaded automatically and are not listed here. Some other (optional) installer components are shown below. They are probably not necessary, but may be interesting to some users.

To save memory, only components that are certainly needed for an install are selected by default. The other installer components are not all necessary for a basic install, but you may need some of them, especially certain kernel modules, so look through the list carefully and select the components you need.